I don't get it

Milpai, I'm reading anything and everything I can re various footers. I've also been reading the threads here. So yes, I am interested in user experience. The speakers did not come with anything else. I contacted the manufacturer for
any input, thinking that perhaps they've tried various products under their speakers. The 'don't use anything' response came as somewhat of a shock. I'm not asking about footers per se but rather wondering why a speaker maker would say such a thing. It makes no sense. Perhaps it will remain a mystery.

Thanks for the input and comments. The carpet is on an oak floor.I've decided to place 1 inch thick non resonant stone tile (perhaps granite) under the speakers and raise the speakers at all 4 corners with cones of some sort.